Low Dropout Voltage Regulators

Low dropout voltage regulators are types of linear regulators that provide an inexpensive way of regulating output voltage with few external components. Linear regulators are used to maintain a steady voltage in electronic devices. Low dropout voltage regulators can regulate output voltage even when it's very close to the supply voltage. They have low noise and good ripple rejection making them crucial to maintaining a stable power supply in any power-management system.


What are low dropout voltage regulators used for?


Low dropout voltage regulators help to maintain system voltage independent of battery. This makes them useful for portable applications, as well as for equipment that needs a stable voltage while minimising the supply. You're likely to find low dropout voltage regulators in devices such as smoke detectors or alarm systems.


Choosing the right low dropout voltage regulator


There are various factors to consider when choosing the right regulator. These include required output voltage, maximum load current, minimum dropout voltage and the type and range of input voltage. Low dropout voltage regulators are the right choice if a more precise output voltage is necessary and there is a low power dissipation.


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Description Price Dropout Voltage at Maximum Current Output Voltage Output Type Package Type Maximum Output Current Mounting Type Minimum Input Voltage Maximum Input Voltage Pin Count Number of Outputs Polarity Quiescent Current Accuracy Minimum Operating Temperature
RS Stock No. 812-4132
Mfr. Part No.TLV70433DBVT
SGD1.016
Each (In a Pack of 25)
units
- 3.3 V Fixed SOT-23 150mA Surface Mount 2.5 V 24 V 5 1 Positive 3.2µA 2% -40 °C
RS Stock No. 145-6047
Mfr. Part No.LT1763CS8-5#PBF
SGD4.956
Each (In a Tube of 100)
units
- 5 V Fixed SOIC 500mA Surface Mount 1.8 V 20 V 8 1 Positive 30µA - -40 °C
RS Stock No. 100-5930
Mfr. Part No.LM1117MP-3.3/NOPB
SGD0.712
Each (On a Reel of 1000)
units
- 3.3 V Fixed SOT-223 800mA Surface Mount - 15 V 3+Tab 1 Positive - ±1% 0 °C
RS Stock No. 785-7272
Mfr. Part No.NCP551SN33T1G
SGD0.535
Each (In a Pack of 10)
units
- 3.3 V Fixed TSOP 150mA Surface Mount 0 V 12 V 5 1 Positive 8µA 2% -40 °C
RS Stock No. 669-4869
Mfr. Part No.MCP1701AT-3302I/CB
BrandMicrochip
SGD1.267
Each (In a Pack of 10)
units
- 3.3 V Fixed SOT-23A 150mA Surface Mount - 10 V 3 1 Positive 0.002mA ±2% -40 °C
RS Stock No. 828-7404
Mfr. Part No.AP2204K-ADJTRG1
SGD0.222
Each (In a Pack of 50)
units
- 1.24 → 22 V Adjustable SOT-23 150mA Surface Mount 2.3 V 24 V 5 1 Positive 50µA - -40 °C
RS Stock No. 533-5632
Mfr. Part No.LM2940T-5.0/NOPB
SGD1.98
Each
units
- 5 V Fixed TO-220 1A Through Hole 6.25 V 26 V 3 1 Positive - - -40 °C
RS Stock No. 102-5640
Mfr. Part No.LP2985AIM5-3.3/NOPB
SGD0.521
Each (On a Reel of 1000)
units
- 3.3 V Fixed SOT-23 150mA Surface Mount 2.5 V 16 V 5 1 Positive - ±2.5% -40 °C
RS Stock No. 533-9448
Mfr. Part No.LM1086CT-3.3/NOPB
SGD3.14
Each
units
- 3.3 V Fixed TO-220 1.5A Through Hole 2.6 V 30 V 3 1 Positive - - 0 °C
RS Stock No. 533-9319
Mfr. Part No.LM1084IT-3.3/NOPB
SGD3.03
Each
units
- 3.3 V Fixed TO-220 5A Through Hole 2.6 V 27 V 3 1 Positive - - -40 °C
RS Stock No. 170-9151
Mfr. Part No.HT7536-1-SOT89
BrandHoltek
SGD0.555
Each (On a Reel of 1000)
units
- 3.6 V Fixed SOT-89 100mA Surface Mount - 30 V 3 1 Positive 4µA ±3% -40 °C
RS Stock No. 100-3958
Mfr. Part No.LM2936Z-5.0/NOPB
SGD1.395
Each (On a Reel of 1800)
units
- 5 V Fixed TO-92 50mA Through Hole 4 V 40 V 3 1 Positive - ±2% -40 °C
RS Stock No. 661-4141
Mfr. Part No.TPS75833KTTT
SGD6.56
Each
units
- 3.3 V Fixed D2PAK (TO-263) 3A Surface Mount 2.8 V 5.5 V 5 1 Positive 0.125mA ±3% -40 °C
RS Stock No. 686-9388
Mfr. Part No.LD1117S33CTR
SGD0.407
Each (In a Pack of 25)
units
- 3.3 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% -40 °C
RS Stock No. 462-8084
Mfr. Part No.TLE4264GHTSA1
BrandInfineon
SGD1.878
Each (In a Pack of 5)
units
- 5 V Fixed SOT-223 120mA Surface Mount 5.5 V 45 V 3+Tab 1 Positive 9mA ±2% -40 °C
RS Stock No. 423-557
Mfr. Part No.LT3080EST#PBF
SGD6.42
Each
units
- 0 → 30 V Adjustable SOT-223 1.1A Surface Mount 1.2 V 36 V 3+Tab 1 Positive - - -40 °C
RS Stock No. 822-6736
Mfr. Part No.LT3080EQ#PBF
SGD5.835
Each (In a Pack of 2)
units
- 0 → 36 V Adjustable D2PAK 1.4A Surface Mount 1.2 V 36 V 5 1 Positive - 1% -40 °C
RS Stock No. 178-7476
Mfr. Part No.TLE4266GHTMA1
BrandInfineon
SGD1.378
Each (On a Reel of 4000)
units
- 4.9 → 5.1 V Fixed SOT-223 120mA Surface Mount 5.5 V 45 V 3+Tab 1 Positive 150mA - -40 °C
RS Stock No. 155-7555
Mfr. Part No.LT3080EQ#PBF
SGD5.268
Each (In a Tube of 50)
units
- 0 → 36 V Adjustable D2PAK 1.4A Surface Mount 1.2 V 36 V 5 1 Positive - 1% -40 °C
RS Stock No. 102-5682
Mfr. Part No.LM1117IMP-ADJ/NOPB
SGD0.712
Each (On a Reel of 1000)
units
- 1.25 → 13.8 V Adjustable SOT-223 1.5A Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
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